<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>
</head>
<body>
    <div id="app"></div>
    <template  id="root">
        <div>{{message}}</div>
    </template>
    <script>
        //创建应用实例
        const app = Vue.createApp({
            template: "#root",
            data() {
                return{
                    message: "hellow vue", 
                }
            }
            
        })
        app.mount("#app")
    </script>
    
</body>
</html>